While the US government is busy jumping on the bandwagon of 'change' in Egypt, it is worth remembering that the US has supported Mubarak's vicious regime with tens of billions of dollars of military aid for decades. Not only that, but Mubarak was so close to US power that Hillary Clinton viewed him as a personal friend. This is from an interview with Randa Aboul Azem of Al Arabiya (h/t TinyRevoluton):
We look forward to President Mubarak coming as soon as his schedule would permit. I had a wonderful time with him this morning. I really consider President and Mrs. Mubarak to be friends of my family. So I hope to see him often here in Egypt and in the United States.